Oxygen Requirements of Bacteria BACKGROUND The GasPak system is useful for culturing anaerobic bacteria on standard microbiological media because the GasPak generates carbon dioxide and hydrogen. The hydrogen will combine with oxygen present in an anaerobic jar to produce water. This system can reproducibly attain oxygen levels in the parts per million range if used correctly. This is the best method for determining the oxygen requirements of unknown organisms. A candle jar is useful
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The Unknown Citizen "The Unknown Citizen" by W.H. Auden‚ is a commentary on government and the materialism of modern man. The poem is written in the form of an obituary inscribed on a monument built by the government in commemoration of an average‚ upstanding‚ and decent community member. Throughout the passage‚ the speaker lists facts about the citizen’s life which he believes prove that the deceased was a valuable person. In actuality these facts represent nothing more than the socially accepted
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Cited: 1. Burton’s Legal Thesaurus‚ 2007‚ Burton C. William: http://legal-dictionary.thefreedictionary.com/intent 2. General Intent vs. Specific Intent‚ 05 May 2012‚ Author unknown: http://www.miblaw.com/lawschool/general-intent-vs-specific-intent/ 3. Brookhart G. Daniel‚ Criminal Law Deskbook “Crimes and Defenses”‚ Volume II Charlottesville‚ Virginia 2010‚ page 2-1. 4. Specific and General Intent Crimes Lawyers‚ 09 September
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Livja Koka Anaerobic Bacteria In this experiment the purpose is to seek understanding between an organism and its use of oxygen. Oxygen is a very important part of the organisms’ survival. Oxygen has a tendency to form very reactive by-products inside a cell. These by-products create havoc by reacting with protein and DNA‚ thus inactivating them. Cells that are able to live in the presence of oxygen have evolved enzymes to cope with H2O2 and O2- and thus are not inhibited by O2. Also many anaerobes
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Bacteria are the most ancient life forms‚ most bacteria are so small that under a light microscope you can only see them as little dots. Some groups however grow to larger sizes and have spectacular shapes (1). Bacteria are present in most habitats on the planet‚ growing in soil‚ water‚ acidic hot springs‚ radioactive waste‚ and deep in the Earth’s crust‚ as well as in organic matter and the live bodies of plants and animals (2). Bacteria is mostly thought of as a pathogen‚ while it is true that
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The Unknown Citizen : W.H. Auden - Summary and Critical Analysis | The Unknown Citizen by W.H. Auden is a satiric poem. It describes an average citizen in a government-controlled state. In many big cities‚ there is a monument to the Unknown Soldier that stands for the thousands of unknown soldiers who die for their country. The title of Auden’s poem parodies this. | | The citizen to whom the monument has been built has been found to be without any fault. He was a saint not because he searched
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<center><b>The Unknown Citizen Is Me</b></center> <br> <br>"The Unknown Citizen"‚ a poem written by W.H. Auden‚ reflects a period of vast change in America’s history‚ making "The Unknown Citizen" an example of the government’s view of the perfect modern man in an overrated‚ unrealistic society. <br> <br>During the time period that this poem was written‚ in the late 1930’s‚ The United States was going through tremendous social‚ political and economic change. Following the passing of Black Monday
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Abstract Some bacteria are able to go through transformation making new combinations of genes. Transformation is a way of gene variability in bacteria. This experiment is based on the transformation mechanism of bacteria and gene regulation. The bacteria used for the experiment was Escherichia coli and the genes introduces for the transformation were: gfp and bla by a pGLO™ plasmid. After the insertion of the target genes and growing the bacteria on specialized LB media‚ it could be seen that the
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found in feces and meat. The pathogen is still a major instrumental issue in human health and is easily infectious with contaminated sustenance. E. coli is gram-negative bacilli tested in clinical settings from stool specimens. The tests detect the presence of disease causing pathogens of E. coli that produce Shiga toxins. E. coli bacteria commonly occur in nature and they are a necessary component of the digestive process in humans and most other mammals. Most strains of E. coli are harmless‚ but
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these pathogens and their related epidemiology has become increasingly more important. The purpose of this study was to identify an unknown bacterium in a controlled laboratory environment over a 5 week period. Utilizing a variety of differential testing and staining methods learned in the microbiology course‚ students were to determine the identity of an assigned unknown organism. Observations were made and recorded each week to narrow down the scope of identification. Data has been presented in
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